Elevator-control apparatus



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, ELEVQLITR 'CONTROL APPARATUS Filed Few 1o, 192

2 Sheets-She@ 'i uV lNvENToR f Oct, 199 m2@ lu-L, ZARAFU ELEVATOR CONTROL APPARATUS 2 Sneaks-Sheet 2 Filed Feb. 10

, INVENTOR autres sfr/ares FFEQ HERMAN ZARAFU, 0F BROOKLYN, NEW YORK, ASSIVGNOR T0 ELEVTOR SUPFLIES COMPANY, INC., OF HOBOKN, NEW' JERSEY, A CORFORliTN OF NEW JERSEY.

ELEVATOR-ONTROL APPARTS.

Applitattitn: filed February rlfhis invention relates to .leontrol apparatus for elevators and particularly to elevators electrically controlled, whether such control is centered in the ear or at ghe Various landings along' the hatchway in which thel car travels. c

An object .ot the invention is to provide safety interlocking' means whereby (except.

in ase of emergency, ksuch as lire) the ear cannot be started away from any Vlandingr unless and untilall hatchway doors are closed 'and mechanically locked in closed position; and furthermore to render it impossible to reopen, or even to unlock, any hatchway door until the lcar reaches the landing where such door is located and stops,

A feature of the invention 'in this connec- 'tiou lies in the provision ot a safety circuit which is broken immediately prior to 'the removal of the mechanical lock on the door operating members; it being impossible to remove said lock until said safety circuit has been opened.

A further featureot this apparatus, in installations where the doors are power op- `erated (as oy fluid pressure; for example) lies in its provision of a-eertain sequence tor' all the necessary operations,mamely the breaking;` oi the control circuit, the removal of the lock on the door operating members, and the vapplication ot the power (fluid pressure, for example) tothe door; all three operations being 'ell'ected byl a single initial act on the part ot the operator. I thereby rcduce the Work ol the operator to a m1nnnum,`

assuring faster .service for the passengers, but at the same time necessitating a satety sequence of operation which eliminates any possibility et accident.

Herctotore it has been customary to have electric. interloeks of such a nature that the control circuit. for the elerator was broken as a consequence ot the removal ot the door lock or'as a consequence of the door having been opened to some extent. Many excellent and very serviceable types ot interlocks operating` in this manner have been constructed and patented, and have proven satisfactory from the commercial viewpoint But they 1e, 192e. sera-u No. 87,302.

do not provide an absolutely sate sequence ot operation` because with such interloclfs the cars motive power is still in operating condition with respect to the ear even after the door is put in an unsafe condition.

ll believe I am the first to eliminate this objection by providing a unit-ary apparatus lwhich will permit the breaking ot the cir cuit and the remo val ot the lock on the door operating' nien'lbers to be successive steps et`- tected by a single initial actuation; but at the salue time will positively prevent the un lockingof the door unless and until the car is stopped with its control circuit broken.

Other objects and advantages to be derived from my invention will appear as'the description progresses, referencev heine; had to the accompanying drawings, wherein Fig. 1 shows my apparatus as Ait appears at a hatchway landing, together with an actuating device on the car. l

Fig'. 2 shows some o't the novel features ot the apparatus ot Fig. 1 on a larger scale.

l Fig. 3 is a view at right angles to Fig. 2. 'showing some of the parts appearing in Fig. 2.

.Figure t is a View showing a modified forni ot a portion olv the apparatus. l

l'n the drawing 1 designates a ear adaptedy to travel in a hatch 2, and 3 designates a landing` at which a sectional door i is located. Beneath the floor of the car, lout attached thereto` is a lcam 5 adapted in its extendedposition to engage roller 6 when the car isl at the floor level. Roller 6 is mounted on an arm 32'pivotally secured to casing 8 by means of shaft 38 journaled in hearing l7. Casing 8 is secured to the hat-eh framework in the proper location by means ot boils 9. i' y f Extension ot ear cam 5 may be controlled either automatically or manually in any nianper well known in the art, such as shown in patents to Norton 1,545,164, 1,550,449 j and 1562184, issuediresp'ectively on July 7, 1925, Aug; 18, 19253 and Nov. 1'?, 1925, mi or as shown in patent to Fear 1,565,143, L issued llee. 8, 1925. Since the control of the car cam forms no part ofl my invention, l i

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ahont itis pivot` G13. Nut (il `alno Serves to po ion he huiuper in strikingrelalion lo valve al'eni lt).

'iflie 'various 'parisv of he apparatus hav" ins; heen deserihed. a eoinpleie operalon ivill now he l'ollon'ed through. liety un Suppose lhat ilie operator ol ear l hany Stopped at landing 3, and wishes to open the door 4l..

'aufiinaeani to he extended to engage roller (l, pushing' rli-l lat ler to the lei't. there hy ri'talzingf lhe rorler :il ahout` its pivo'l'-, and causing arm 3h, tu ride out over tho upper surlaf'e Q9 ol' eroxsehar 20.

Before ai'ni 8O entirely elears har if), however.y arm 4G will have -Withdrawn roller 48 from Contact u'iih resilienfjhladea "fi, therehy opening the eireeil' to lthe hoisting: inotor all ilial'y poini.. *ii-,reveiitine' aniv poS- sihle uiorenieiit' oiE :le ear hy its hoisting: motion iier elearii'ig eroeeliar 20. knoli 57 on 'doe end oi 'the roe-lier' will engage lue- 5G of hamper to tzurn the naine ahout: itinA pivot Gl'. Canain plunger (il to raise valve stein 19 lo admiify air lo the cylinder l() to raise 'die toggle arms (rod Q3 now heine' lree to 'lollo'iv iofgle arm l1 in its upward movemenlg). Raising; of the toggle arma eauifes door l lo slide lo open position in the usual manner1 as is obvious 'from an inapeet'ion of fig. 'l. i "When the operator winh'e@ to eloSe (and lool@ door l again prelniratory to starting nii/'a5' -from the landing he will remove his pressure iiroiii pedal 7() alloiiine sprine 7i io relraet cani 5. Retraeiiou of earn 5 will permi'rl spring 40 lo initiale the return of roeier 3l io im leithand posiiion. The rocker cannotv 'yetreturn the full distance. however, due" to the fact that'y eroSS-har 2.() is in its upper posiion. lienre in the path of finger-72. But it eau` and does, return fai' enough lo render humper 55 free to swine hoek to the Ypoaition Shown in lP 2 under the influence of gravity and the downward nioveineniy of valve stein lh: the downward piovenient of said valve stein heing' lirought ahout by the aid oi springy 18.-

liixliaust noir takes place from cylinder l() thru line 13 and exhaust port 2L, so thatI the spring' ahove the piston in cylinder 1t) forces Lilie toggle arms hack to the position Shown in 'full lines `in Fig. l, therehy'olosing the door.

"The downward movement of the. toggle arms causes the deseent o' v"rod 23 and cross- ,aan

'.lfle depreaeea pedal To againl' epi-ine' Tl.-

har 2f). so thai the. latter rides down out of ho path otI linger 7:2, which iherehy he.; eoiiieS iree to eoniiiue its movement to the extreme lett-hand loehing` position, (shown in Fie: 2) under lhe intiuenee ol' spring' 4U. Finger T3 and arm il() again resi on suriare ESP-"fand the door in again loi-hed in closed position.

lt`uri'herinore this linal movement ol roeher ."ll io the le'i'l eauseal the return ol roller 48 hetu'een (he xprine' hiadefi. so that the eireuit to the hoialiirer motor is remade. and the power ean he applied for moving` the ear (provided. oi course, all other Conneetious are made. and all other landing doors; are eloeed). v

Thus it; is apparent thai the. moet' desirahle sequenee of operation is obtained hy my novel apparatus not only on the open in.;i` movement'. hut also on the closing' movement o'l' the doors.

l have deaerihed and illustrated my invention in its more eon'in'ion aspect, namely as applied to pi'ieuniatieally actuated elevator doors. hut oliviously the principle and the inventive lfeatures of the apparatus can lie-applied in numerous other ways which will oeeur lo thosev Skilled in the art. For example, where, lha doors are eleetrieally ooened or Closed, hy means (ifa-suitable eieet'rio or eleetro-magnetie device such as that illustrated 'in Fig'. 4, vvhieli is taken from the, diselosnre in palloni to lVatFon No. 790334 of May 1905. roelwnl instead o'liloperaiine a valve. will operatie a eireuit makingv deviee 'l'or ille door operating' motor; as for example. the spring inlhieneed eontaet maker 102 `Shown in Fig'. al in which event the valve 'l5 and huinper 55 may he' dispensed willi. rIlie valve and bumper may also he dispensed with. o iE eourse, when ever lhe fluid pressure 'operation is dispensed with. I

From an inspection of Figures l and 4 it `will he apparent that \\'h.ene\f'er the operator retraets cam 5. allowing' rocker 3l io return. spring itil ivill return eleetrie, eontact` 102 to circuit open position7 suhstantially as in the patent to Vilar-fon. ahove re-y ferred t'o` lherehy releasing i'he tension on Chain 103.440 that the door eloaer elii'liuder l() may iunelion t'o eloso the door; lf l'or any reason the ino'ror 101 fails to function properly the door iu'i'ayfhe opened inanually hy means; voi the handle provided on to: gie arni l2 just as in the ease of a l'ailure o l air prese-,ure u'hen `llie ronntrnetion Shown in Figures 1 toil is employed; if heine' understood that the ,ontruetion"of the door closer cylinder 1U remains as described hereol'ore. In other words. l may employ any one of Jthree different methods of opening the door llnainely, fluid pressure, electricity. or hand power) hutv with eaeh -metliod I prefer to retain the saine 'door-@losing IUS lit)

means; principally hccause 'this means has proven simple and ei'ective, but also-hecause such n construction lis particularly 1dell suited for use with my novel interlocking apparatus.

l, therefore, do not limit myself to the speciic embodiment, ctnistruction, orarrangcmcnt olf parts herein described and 1llusti'ated, but only the scope 03: .the rnlvention as disclosed herein and as deined to the door, toggle .arms pivotally conlnected and adapted in normal position to 1 loclr the edoor against movement, a 'lock connected to one ot'eaid arms, a power controlling: switch, and a single operating member *for said lock and switch for causing,

rst, the'opening' of said switch, and,lsu`b sequent -thereto, the release of 'said loclg, whereby power control 'for said car 1S rendered' inoperative before the lock is rr.-

moved from the toggle arms.

3. nan elevator control apparatus in combination, a door, a car relatively mov-- able `with respect to the door, means for openingthe door comprisingan actuating mechanism, a lock engafing said actuating mechanisnn a power controllingr switch, and

a single operating member for said lock and switch for causing lrst, the opening of said switch, and, subsequently thereto,

the release of said lock, whereby the poiver control `for said car .is rendered inoperative before door.

4.111 an elevator lcontrol apparatus, a door, a car relatively movable with respect to the door, fluid pressure means for openinf:r the "door, a lock for the door, a power controlling switch, and operating mechanism for said-lock, switch and iluid pressure means, constructed and arranged to cause first` the opening of said switch, and subsequently thereto; the release of .said

`lock and the operation of said fluid pressure means.

' 5. In en elevator control apparatus, a door, a car relatively movable. with respect to the door, means for opening the door comprising a fluid pressure motor', a valve for controllingl the supply of fluid to said the lock is removed from the to the door, means for opening the door comprising a lluid pressure motor, a power controlling switch, and an. or ating con-- erection constructed and arrai d to con@ plete, llrst, the opening ol said witch suhscquently thereto, the operation ot motor, who; lily the door can he opened ont after said switch is opened 7. in ans elevator control apparatus, door, a car relatively movable with respect lo the door, nvans tor opening the door con'lprising a fluid pressure motor and operating connections from said motor to the door, a valve for said motor, a, car controlling switch, and operating mechanism lor said valve and switch constructed and Vrraugcd to complete, first, the opening of said switch and, subsequently thereto, the operation ot said valve, whereby the' door' can be opened only after said switch is opened.

8. ln an elevator control apparatus, a door, a car relativelyT movable `with respect to the door, toggle arms pivotally connected and adapted in normal position to loci'r the door against movement, power means associated with said toggle arms for controlling the movement ofsaid door, a power controlling switch, and operating mechanisxn for said switch and powenmeans constructed and arranged to'cause, ,zlrst, the opening' ot said switch and, subsequently thereto,the operation of' said power means.

9. ln an elevator control apparatus the combination Withla, door, of a car relatively movable with respect to the door, a circuit to the hoisting Amotor for said car, a switch in said circuit, toggle arms associa'ted withA said door to cause movement..

to lock the toggle system, and operating mecha ism for said itch and lock. construe ,d to cause tirs-t, the opening o ernten, und, suhseq'ucnzxtlj "i llle 'removal el? loel, whereby veter Comprising e door eelueeg; meelzr 4i? e oor renmius loelecl until after seid 1iisn'1,e rod depending veilieellyg'"'om seid eireujr broken, door actuating meehenisn'l, e yelie on lie i il.. lil errelevaor eonrol apparatus the lower enel ell said rofl, ai transversely movl2' 1;ii m wih e door, of a relatively able member on @he een', e. rocker arm pivifriev/elile willigrespee; to the door, e, circule etelly mounted in position to be engaged by 5U to ille .lioislinf motor for seid ear, a swilteli Said mei'nber, a projection on said rocker n lf; Seial eirent, toggle arms pivolzelly con`- arm normally engaging seid yoke, thereby oeelefl :zml adapted in norinel posiien to locking Seid :gelimiug meeliifmism und eirll' lowly the door alguirst movement,- 'ii lock on 'uil; closing meen-S one seiil :irme erle,} 1el llo loelg the tog seid rocker erm.

operatively eoi'meelecl io fslzeni, :i` mol; for controlling the epjill. An interloekingi;r system 'for :in ele- "e, ien of seid toggle arms, und a unitary vsier eomirising a door Mieming meelief sralixzg meelimrism for smid ,eveil/eli, lock' nisl'ri, e. rofl depending certi elly from Sairl Meolo?. 1 door rewriting mechanism, e yoke on the a. As sub-eomleiimtion, e door, e, cer lower end of seid r fr/'ely' move-.lilo with respeet to seid door, alile member on lie, ear, e roeker arm pim le arms pivoally connected te the door', @telly mounted in posiion to be engaged. e. rod depending vertieelly frem'one of said by seid member, e projection on seid rocker arme, e, deiben; engaging seid rod euml preerm nornmlly engaging said yoke, thereby writing* li'iovemeil, of seid :irme from norloeling'sui amenaing mechanism, ei euit G35 '51ml posilfion, :wel ineens on the eer for reelorsing meeis operatively (zonne/cited to Seid rocker erm,':m(l zi power eonfrollng nrieml'ier lense ml delem.

sm poeitioned a, mili-cowl)im'iliion, (loer, a enr 'for seid freiwillig meelleni rely movable willi respect to seid door, so fis le be engaged ,by said rocker :um when W le :rame: pvol'ell'v connected to the door, moved from its normal posiion.

f `lepeouiing ver nelly from one of'sziifl 17'. Au interlocking system- 'or en. ele sirens., :i delen?, engaging seid roll :und preveler comprising e door actuating meehe- Yexlliig movement o.' mill :mns from noz-nml iiism, :i rod depending vertically rom said pfeil-imi, e eireuir.- lo ilse hoisting motor for door actuating mechanism, 'yoke on the /'ze eer, :i ei euii closer lierelor, :md :L sinlower' end of seid rod, :1 transversely mov# 7 tiny; member for seid rleten :md :ilxle n'ieinlier en the eer, a rocker-arm plv olsxlly mounted in position to be engaged by fl. 1w e eleli-Combinalion, e door., :fr ear suifl mouiller, :i projection on Seid rocker el@ el od, :i transversely mov-- G0 e tively movnljle with respect lo seid door, erm nm'mnlly engaging' said yoke, thereby lo lle firms pxvelizzlly eom'ie ted o the door, locking smal aetualing mechanism, circuit 80 i; l Hepemlifigf vertically ilrom one of seul closing ineens operatively eo nnected to seid e 'for Controlling the ludle seid eetuzl'e" ned so as flo be enr arm when moved from ermee, e ileten'r engaging seid rod and pre rocker erm, and :L vzilv reeling' movement: of said arms from mim admission of pressure il werden, e. spring normally insuring ening; mechanism positie iggjeniemt of Seial flelenl; with ss'ziid rofl, and gagged by roeke me on die eer for .releasing said fletezt its normal position. fe the inelimlzion e?" seid spring. Hoboken., N, vl., 2/5/26..

en nlerloelring @elem fer en ele- .llrlilfflll'ZRF. 

